fixes in bundle adjustment code by Nils Hasler
fix the crash when calling dft
use clflush replaces clfinish
this test is unstable (fails from time to time), let's disable it until fixed
fix for #2806 (missing 'nu03' field of moments)
fixed assert condition (trueRightDisp can be empty)
fixed warnings
fixed nonfree test (run it only on one gpu device)
Merge pull request #730 from vpisarev:ba_fix
Merge pull request #731 from bitwangyaoyao:2.4_fixDft
Merge pull request #732 from apavlenko:disable_unstable_test
Merge pull request #734 from apavlenko:fix_2806
Merge pull request #735 from jet47:fix-windows-issues
Merge pull request #736 from bitwangyaoyao:2.4_clflush